\documentclass{article}
\usepackage{amssymb,amsmath,amscd,concmath}
\pagestyle{empty}
\begin{document}
\begin{equation*}\frac{\Delta F(P_0)}{\Delta P}=\frac{F(P_\acute{n}) - F(P_0)}{\Delta P}=\frac{F(P_1) - F(P_0)}{\Delta P_i}=\frac{F(UB)-F(LB)}{UB-LB}.\,\!\end{equation*}
\end{document}
